via the medium of "Etch a Sketch"






See info here: http://www.m0rksport.co.uk/shop/index.php?act=viewProd&productId=2

Cheers

Mike

"Care must be taken on diesels, since during the mapping process the excessive vibration caused by the tractor like engines can cause the custom mapping tool to loose it's detail.
If you want to revert to standard, all you need to do is connect the etch-a-sketch to the OBDII port & simply shake the unit."